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Finding the Fourth Proportional to 169,905.40, 254,712.30 and 86,799.40

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Solution

The fourth proportional to 169,905.40, 254,712.30 and 86,799.40 is: 130,124.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,905.40 : 254,712.30 = 86,799.40 : x
  2. Step 2: Convert to fraction form
    169,905.40/254,712.30 = 86,799.40/x
  3. Step 3: Cross multiply
    169,905.40x = 254,712.30 × 86,799.40
  4. Step 4: Simplify right side
    169,905.40x = 22,108,874,812.62
  5. Step 5: Solve for x
    x = 22,108,874,812.62/169,905.40
  6. Step 6: Final answer
    x = 130,124.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.